Metal-work machine.



Patented Jan. 5, 1909.

6 SHEETS-SHEET l.

G. P. THOMAS.

METAL WORK MACHINE.

APPLICATION FILED 11:13.13, 190s. 908,81 8.

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G. P. THOMAS.

METAL WORK MACHINE. APPLIGATIUH FILED rEB.1a,1sos.

908,81 8. Patented Jan. 5. 1909.

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G. P. THOMAS.

METAL WGRK MACHINE.

APPLIOATION PILE 118.13, 190s.

Patented Jan. 5, 1909.

6 SHEETS-SHEET 3.

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METAL WORK MACHINE.

APPLIoATIoN FILED 11:13.13, 190s,

908,81 8. Patented Jan. 5, 1909.

6 SHEETS-SHEET 4.

WITN ESSE'SI G. P. THOMAS.

METAL WORK MACHINE.

APPLICATION FILED FEB.13, 1908.

Patented Jan. 5, 1909.

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G. P. THOMAS.

METAL WORK MAGHINE.

IIIIIIIIIIIIIIIII EB. 13, 1908. 908,8 1 8. Patented Jan. 5, 1909, 6 EEEEEEEEEEEE 6.

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GEORGE PAUL THOMAS, OF PITTSBURG, PENNSYLVANIA.

HETAL-WORR Hlm.

Specication of Letten Patent.

Patented Jan. 5, 1909.

Application filed Felll'wy 13, 19N. Serial No. 415,692.

To all whom it may concern:

Be it known that I, GEORGE PAUL THOMAS, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, a citizen of the United States, have invented or discovered certain new and useful Improvements in Metal -Work Machines, of which improvements the following is a specification.

In Letters Patent No. 835,123 dated November 6th, 1906 und No. 886,551, dated May 5th, 1908, I have described and claimed certain improvements in tool operating machines whereb the article operated on is shifted to predetermined positions where it is acted on by the tool such ositions being determined by suitable templlts controlling the mechanism for stopping and locking the work-carrier.

The invention, described and claimed herein has for its object certain improvements in the stopping and locking mechanism whereby the work-carrier may be stopped and locked without any material shock or jar to the mechanism.

The invention is hereinafter described and claimed.

In the accompanying drawings forming a part of this specification, Figure 1 is aside elevation of a punching machine and the driven portion or member of the workcarrier, the other portion of such carrier being movable and controlled by the driven member of the work-carrier; Fi 2 is a top plan of the operating or controlllng member of the work-carrier on an cular ed scale; Figs. 3 and 4 are side elevations o the parts shown in Fig. 2 showing the locking and stopping devlces in operative and inoperative positions respectively. Fig. 5 is an end elevation of the controlling member of the work-carrier; Fig. 6 is a side elevation showing a modification of the locking and stopping devices. Fig. 7 is a top plan and Fig. S is a side elevation showing a further modification of the locking and stopping devices. Fig. 9 is a view similar to Fig. 5 illustrating certain modications in the machine. Figs. 10 and 11 are detail views illustrating the construction of tripping fingers shown in Fig. 9, and Fig. 12 is an enlarged view showing the construction of the detent and rack.

As shown in the Letters Patent and applimore fully cation referred to, the work-carrier consists of two carriages movable ontrackns arranged on opposite sides of the tool vB, which may be a punch, shear or othermetal Working tool. One of the carriages (not shown herein) is connected to one'end of the article operated on and partakes of the movements imparted to the article by the driving and controlling carriage A connected to the opposite end of the article. The frame of the carriage A is carried by wheels 1, mounted on the rails 2, along which the 'carriage is shifted by a hand or power operated shaft 3 having pinions 4 keyed thereon and intermeshing with racks 5 parallel with the rails 2.

While for convenience my improvement is shown and described in connection with a punchin *machina it will be understood that suc improvements are equally applicable for use in connection witli other metal working tools.

The movement of the c'arria e is controlled by aV templet 6. movably secured parallel with the rails and provlded with pins or other suitable form of stops 7 spaced in accordance with the desired s acin of the holes in the sheet or other artic e. T ese pins or stops ment of trl ner 8 pivotally connected to an arm 9 eye to a shaft l0 mounted in suitable bearings in the frame of the machine. It is preferred that the linger should be provided with a paddle 11 pivotally mounted on the lin r 8 in such manner that when the carriage 1s moved in one direction the finger will be shifted by the enga ement of the paddle with the pins or stops, ut the paddle will swing on its pivotal support and pass over the pins without shifting the arm, when the carriage is moved in the opposite direction.

'lhe linger S is connected to an arm 12 secured to a shaft 13. The connections between the finger 8 and arm 12 is preferably adjustable, a desirable construction consisting of a threaded rod 14 pivoted on the finger 8 and passing loosely through a block 15 pivotally mounted on the arm 12 and through nuts 16 bearing in op osito sides of the block. The arm 12 when ifted as vdescribed turns the shaft 13 which in turn will shift catches 17 out of engagement `with shoulders 18 on the detente 19. It

reject into the path of moveis preferred that the hook portion of the catches should be made adjustable as shwn. The detents 19, preferably one on each side of the carriage are provided with teeth adapted when the detents drop to engage' two lines of teeth arallel with the rails 2, and are so pivote to the frame of the carriage as to permit of some movement of the latter after the detents engage the teeth 20. This relative movement of the carriage can be attained by elongatin the holes 21 in the detents through whic the ivotal shaft 22 passes. The detents are yie dingly held in a position where the shaft is at the near ends'of the slots 21, by any suitable means such for example as that shown consisting of a weighted lever 23 pivotally mounted on the carria and provided with toes 24 bearing in s oulders 25 on the 20detents. These weighted levers normally v85 26 thereby holding i `tions, means are provided for locking hold the detents in the position shown in Fig. 3. As soon as the detents are released by the engagement of the arm 8 with a pin in the templet, the detents will drop into engagement with the teeth 20 and be held stationary while the carriage will be free to continue its movement until the shaft 22 reaches the ends of the slots 21. This continued movement of the carriage is resisted by the weightedlevers 23 which will be raised by the movement of the carriage relative to the detents. The slowing eiect will be proportional to the weights in the levers. As the carriage or detents might be shifted by the .tendency of the weight to return said parts to normal relative posti; t detents in engagement with the teeth and for locking the carriage and detent as against any relative movements. A convenient construction to this end consists of fingers 26 pivotall mounted on the carriage and provided with lugs 27 ada ted-to drop in front of shoulders 28 on the detents when the carriage has reached a osition havin its shaft 22 bearin inst t e forward en of the slots 21 in t e etents so that carriage will thereafter be locked to the detents from forward movement by the shaft bearing against the front end wall of the slots, and from rearward movement by the lugs enga ing the, 'shoulders 28. Means are provided for locking the lugs in en gement with the shoulders ,28 and the etents in engagement with the teeth 20. While not necessary it is preferred that the same device should be employed for both functions. A convenient construction to that end consists of triggers 29 pivotallyj on shaft 30 in such manner thatwhen the ltinrs ,26 have dropsped1 to posi-tionijrhere the ge s engage the oulders 28'; the'f'triggers forward until their ends engage edges of lingers wi l swing notches 31, on the up ngers down with."

Twill their lugs in engagement with the shoulders 2S and through said fin rs holding the de"- tents in engagement wit the teeth 20.

The release of the carriage from the detents to allow said part to assume normal positions relative to each other and also the release of the detent from the teeth 2O and the lifting of the paddle clear of the ins 7 on the templet are preferably efected by a single lever or handle although -sad functions can be separately effected.

A lever or handle 32 is secured to shaft 10 and by depressing this handle the shaft is turned to raise the trip fingers 8 above the pins 7. Arms 33 on the shaft 10 are adjustably connected by rods 34 to arms 35 on shaft 30, said arms being provided with lugs 36, which are connected by links 37 to the lingers 26. The connection of the links to the ingrs is so constructed, z'. e., a pin and slot t at the arms 36 will have some movement prior to lifting the fingers for the purpose of permitting the triggers 29 being first shifted from engagement with the fingers. This shifting of the triggers is effected by means of pins 38 on the arms 35 engagingangular extensions b of the triggers 29 uring the first movement of the arms 35. After the triggers have been shifted and the fingers 26 raised, such movement being ractically simultaneous with the lifting ofp the tripping fin r 8, the detents are raised, the detents aving a in and slot connection with links 39 which are connected to arm 9 and a similar; arm on the shaft 10 adjacent to the opposite end of the latter. As soon as the detents are raised they will be shifted to normal position relative to the carriage by the weighted levers 23, and the detents will be locked in raised position by the catches 17 which will be forced forward b the wei ht 40. The forward movement o the cate es will swing the tripping fingers -8 forward to operative position, and the fingers will be lowered into position to be again shifted by pins 7 by the reverse rotation of shaft 10 by wei hted arm 41. This reverse movement of s aft 10 permits of the release of the fingers 26 and locking triggers 29 from their unlocking devices.

It will be understood that as shown and described in Letters Patent No. 835,123 an electric or other suitable motor may be employed for shifting thecarriage and also the electrically controlled means can be employed for shifting the shaft 10 as set forth in said patent. `,In the Letters Patent referred to provision is made for a close ad- 'ustment of the carriage such adjustment eing effected by forming the detents with a plurality of sections (sur in the construction shown), the teeth on the several sections bein staggered as shown in Fig. 12. It seen that the teeth'c on each detent sessie yconstruction shown the'teeth 20 are re re sented as being three sixteenths of an inch apart so that a tooth of one of the detents will engage a tooth 20 for a movement of the carriage equal to a thirt -second of an inch. Hence the :holes can e punched in .the plate or other articlelwithin at most a 'thirty second oan inch of desired point.

As shown in Fig. 6 the mechanism for stopping the carriage can be so constructed that the teeth 20 may be arranged on the lunderside of the longitudinal members or channels 42 supportin I the carriage or along the inner edges of 't 1e same as shown in 'Figs 7 and 8, thus avoiding in either construction such a clogging of the teeth 20 as `Would prevent the teeth of the detent properly engaging the same.

In Fi 6 the teeth 20 are arranged on the undersi e of the'members 42 and the detents 19a are connected to the frame of the carriage by a shaft 22 secured in the depending web 43 of the carria e and having its ends extending through s ots .21" in the detents., In this construct-ion the weight of the rear end of the detent tends to cause the detent to turn on the shaft and bring its teeth into engagement with Vthe teeth 20. This movement of the detent is prevented, except as hereinafter stated, by a catch 17 pivotally mounted on shaft 13% and provided wit 1 a hook a adapted to engage a shoulder 1'8 on the detent. This catch is shifted to release the detent by the tri ping finger 8 which is adjustably connecte by a rod 14 to one end of a lever 12, the opposite end thereof being connected to the catch. The cau'ria-ge is locked to the detents from movement 1n one direction by the shaft 22Il Vbearing against one end of the slot 21 and from movement in the other direction by finger 26 engaging shoulders 27* in the detents this operation being similar `to thatof the construction shown in Figs. 1 to 4. The fingers are locked in engagement with the detents and the latter in en agement with teeth 20 by triggers 29, whic are provided with angular extensions b. The movement of the carriage after the detents engage the teeth `20, is gradually checked by the Weighted lever 23, the operation being similar to that of the constructions shown in Figs. 1I to 4. The tripping n rs are raised so as to clearthe pins 7 by t le handle 32, and during the same movement to shift the trig ers and raise the locking fingers 26. To t is end sidebars 44 are pivotally connected to arms on the sha-ft 10 and carry a rod 38 engagln the angular extension b of the triggers an 'a rod 45 engaging a slot Vin the fingers 26 'such construction ,per-

mitting `the shifting of the triggers prior to the lifting of the fingers.

ln the construction in Figs. 7 and 8 the teeth 20 are arranged along the inneredges of the channel or member 42 and the deteuts and their locking devices move horizontally. The detents 19 have slots 21b adjacent to their rear vends for the reception ofthe pivotal pins :22h secured to the carriage. The detents are shifted to engage the teeth 20 by a spring 45". The catch 17 for holding the detents away from the teeth 20 are secured to vertical shafts 13", to which levers 12b are also secured. One end of these levers is adjustably connected to the tripping finger 8 by a rod 14"A and the opposite ends are connected to springs 46 to cause the catches to engage the detents and to return the tripping finger to operative position. The fingers 26h are shifted to engage the detents by springs 47. The triggers 29h are shifted to lock the fingers 26b by springs 48 connected to the'angular extensions b on the triggers. The shaft l() is shifted by the handle 32 to raise the tripping iinger clear of the pins 7. By the same movement of the shaft multiple lever 49 is shifted, said lever having one of its arms connected to a rod 5()l which is moved by an arm 51 on the shaft 410 projecting into a slot Vin the rod. One of the arms of the multiple lever is connected` to a rod 52 to a corresponding arm on a similar lever (not shown), for operating the devices on the o posite side of the carriage. One arm o each of the multiple levers is connected by links 39* to the detents and other arms of the levers have adjustable connections by rods 34b to arms 35" on the shafts 30".

As shown in Fig. 9 the templet may have two or more series of differently spaced pins 7, and the trippin linger 8 provided with two or more pa dles 9. When one' series of pins is being used the addles in line with the other series will be eld in inoperative osition by a hook 53 as clearly shown in igs. 10 and 11.-

In operating on long sheets or other articles it is deslrable to provide supports intermediate of the carriages. To this end shafts 54 are supported 1n blocks 55 ver-4 tically ad'ustable by means `of threaded rods 56. l ,heels 57 generallyr three in number, are loosely mounted onjthafehafts and form edge and intermediatesnpports for the sheet.

Gripping jaws 58 the shape and construction of which will vary wlth article operated on, are secured to the carriages by plates 59 in any suitable manner. As parts of these jaws will project below the level of yso the. sheet or other article as shown in Fig. l and might therefore strike against the intermediate 'supporting Wheel, tapering prongs 59 are secured tothe front of the carriage and in line with the gri ping jaws to shift the intermediate whee along its shaft out of linewith the gripping jaws.

I claim herein as my invention:

1. In a tool operating machine, the combination of a stationary and a movable member, a lock mechanism for connecting said members Without interrupting 'the lmovement of the movable member and means for gradually checking the movement of the movable member.

2. In a tool operating machine, the combination of a stationary and a movable member, a detent movably mounted 'on one member and adapted to engage the other member without averting the movement-of the movable member and means interposed between the detent and the movable member for gradually checking the movement of the atter.

3. In a tool operating machine, the combination of a stationary and a movable member, a detent carried by one member and adapted to engage the other member without averti the movement of the movable member an means interposed between the detent and the movable member for ap lying a progressively increasing reta ing force to the movable member.

4.-. In a tool operating machine, the combination of a statlonary'and a movable member, a detent so mounted 'on the movable member that the latter'can move independent of the detent and adapted toe age the stationary member, a weight carri by the movable member and means operative by the detent when Yin enga ement with the stationary member to s ift said weight and thereby radually check the movement of the mova le member.

In a tool operating machine, the combination of a statlonary frame provided with a series of suitably spaced pms, a carriage movableralong the-frame, a detent mounted on the carriage and adapted to engage teeth on the frame, means for locking he detent acacia in engagpment with said teeth and a trip ing finger s iftable by the pins and contro ing the detent and lock.

6. In a tool operating machine, the combination of a. stationary frame, a carriage movable along the frame, a 'detent s o mounted in the carria e that the latter can move independent of tbe detent when in enfagement with the frame means interposed etween the detent and carriage for gradually retarding the movement of the latter and means for locking the detent and carriage as against relative movement.

7. In a tool operating machine, the cbmbination of a stationary frame provided with a series of suitably spaced pins, a carriage movable along the frame, a detent mounted on the carriage and adapted to engage teeth on the frame, means for locking tie carriage and detent as. against relative movement, means for lookin the detent and carriage lock, a trippin igpr shift- 'able by the `pins and controllm t e detent and means for successively s ifting the finger, the detent and carnage locks, and the detent.

' 8. In a tool o erating machine, the combination of a rame, a carriage movable ria to the frame, two or more series of di erently spaced pins on the frame and a trippin fin er controlling said lock and adapte to shifted by either of said series of pins.

9. In a tool o erating machine, the combination of a ame, a carriage movable along the frame, means for locking the carria e to the frame two or more series of `di erentl spaced pins on the frame, a tripping nger mounted on the carriage, and two or more paddles movably mounted on the finger and means for holding one or more of the paddles in inoperative position.

In testimong7 whereof, I have hereunto set my hand GEORGE `PAUL THOMAS.

Witnesses:

CHARLES BAnNn'rr, FRANCIS J. ToMAssoN.

along the frame, means for locking the car- Y 

